A compact and portable microSD card holder with a minimalist design, suitable for all printers that rely on microSD cards for operation, such as Creality series printers. The card cover features an interference fit design, which can be easily installed using ordinary PLA material, with results identical to what I've used before. The requirements for infill density and print accuracy are extremely low, with only about 1mm of vertical clearance needed as a buffer to prevent the card from being squeezed and deformed in extreme situations. We welcome everyone to share your usage experience!